Michigan Compiled Laws, Chapter 339. Occupational Code § 339.2410

Sec. 2410.  A person or qualifying officer for a corporation or member of a partnership or other business association who currently holds a residential builder or maintenance and alteration contractor license shall not be required to repeat an examination for that license when making application for an additional license.  However, a maintenance and alteration contractor who currently holds a license and makes application for a residential builders' license shall be required to take an examination for that license.